Touch display substrate and display device

ABSTRACT

A touch display substrate and a display device are provided. The touch display substrate includes a plurality of sub-pixel units ( 10 ), data lines ( 20 ) and touch signal lines ( 30 ). For any two adjacent rows of sub-pixel units, the sub-pixel unit ( 10 ) in one row of sub-pixel units is staggered in a row direction with respect to the sub-pixel unit ( 10 ) in the other row of sub-pixel units adjacent to the one row of sub-pixel units by a distance of X sub-pixel units ( 10 ), and 0&lt;X&lt;1; these two sub-pixel units ( 10 ) have different colors. Data lines ( 20 ) and touch signal lines ( 30 ) are at gaps which extend in a column direction and are between the plurality of sub-pixel units ( 10 ). The touch signal lines ( 30 ) and the data lines ( 20 ) are in a same layer and the touch signal lines ( 30 ) are insulated from the data lines ( 20 ).

This application claims the benefit of Chinese patent application No.201710681837.0 filed on Aug. 10, 2017, which is hereby entirelyincorporated by reference as a part of the present application.

TECHNICAL FIELD

Embodiments of the present disclosure relate to a touch displaysubstrate and a display device.

BACKGROUND

A touch display panel is a display device with both display and commandinput functions. A user interacts the touch display panel with a hand oran object, which is detected in a touch region of the touch displaypanel, and the touch display panel makes a corresponding responseaccording to the detected touch region. Among many kinds of touchdisplay panels, in-cell touch display panels, in which touch electrodesare embedded inside a display panel, have features such as thinthickness and low cost, and thus are favored by major panelmanufacturers.

In order to meet the touch accuracy, in the touch display panel, it isgenerally necessary to provide a plurality of touch electrodes insidethe display panel, and each touch electrode needs to be provided with acorresponding touch signal line. However, the arrangement of the touchsignal lines is complex and still needs to be increased.

SUMMARY

According to the embodiments of the present disclosure, a touch displaysubstrate is provided. The touch display substrate includes a pluralityof sub-pixel units arranged in an array. For any two adjacent rows ofsub-pixel units, the sub-pixel units in one row of sub-pixel units arestaggered in a row direction with respect to the sub-pixel units in theother row of sub-pixel units adjacent to the one row of sub-pixel unitsby a distance of X sub-pixel units, 0<X<1, each sub-pixel unit in theone row of sub-pixel units has a color different from that of thesub-pixel unit, which is adjacent to the each sub-pixel unit and is inthe other row of sub-pixel units, and each of the plurality of sub-pixelunits includes a pixel unit switch. The touch display panel furtherincludes: data lines, at gaps which extend in a column direction and arebetween the plurality of sub-pixel units; and touch signal lines, at thegaps which extend in the column direction and are between the pluralityof sub-pixel units. The touch signal lines and the data lines are in asame layer and the touch signal lines are insulated from the data lines.

For example, the pixel unit switch includes an active layer, the activelayer includes a source region, a drain region and a channel regionbetween the source region and the drain region, the active layer is in alayer different from the layer where the data lines and the touch signallines are located, and the source region is electrically connected withthe data line through a via hole; the data lines include a first dataline, and the touch signal line is at the gap, where the first data lineis located, extending in the column direction; the pixel unit switchesof the plurality of pixel units include a first pixel unit switchconnected with a first side of the first data line; and a projection ofthe touch signal line in a direction perpendicular to the touch displaysubstrate is between the source region and the drain region of the firstpixel unit switch.

For example, the pixel unit switches include a second pixel unit switchconnected with a second side of the first data line, and the first sideand the second side are opposite sides of the first data line; adistance between the source region and the drain region of the firstpixel unit switch in the row direction is greater than a distancebetween the source region and the drain region of the second pixel unitswitch in the row direction.

For example, a first distance is greater than a second distance, thefirst distance is a distance in the row direction between two of thedata lines closest to a same touch signal line among the touch signallines, and the second distance is a distance in the row directionbetween any two adjacent ones of the data lines between two adjacentones of the touch signal lines.

For example, the data lines further include a second data line, and thetouch signal line is not at the gap, where the second data line islocated, extending in the column direction; and the two of the datalines closest to the same touch signal line include one first data lineand one second data line, and a distance in the row direction andbetween the touch signal line and the second data line in the two of thedata lines closest to the same touch signal line is equal to the seconddistance.

For example, each of the plurality of sub-pixel units includes a pixelunit electrode, and the drain region is electrically connected with thepixel unit electrode; in two columns of the plurality of sub-pixel unitsclosest to the same first data line, a distance in the row direction andbetween the first data line and the pixel unit electrode of thesub-pixel unit on the first side of the first data line is greater thana distance in the row direction and between the first data line and thepixel unit electrode of the sub-pixel unit on a second side of the firstdata line, the first side and the second side are opposite sides of thefirst data line, and the first pixel unit switch is in the sub-pixelunit on the first side of the first data line.

For example, the active layer includes a horizontal portion extending inthe row direction; the touch display substrate further includes a gateline at a gap extending in the row direction between the plurality ofsub-pixel units; and a projection of the horizontal portion in thedirection perpendicular to the touch display substrate partiallyoverlaps a projection of the gate line in the direction perpendicular tothe touch display substrate.

For example, the active layer includes a vertical portion extending inthe column direction; a projection of the vertical portion of the activelayer of the first pixel unit switch in the direction perpendicular tothe touch display substrate is within the projection of the touch signalline in the direction perpendicular to the touch display substrate.

For example, the active layer includes a vertical portion extending inthe column direction; a projection of the vertical portion of the activelayer of the first pixel unit switch in the direction perpendicular tothe touch display substrate is within a projection of the first dataline in the direction perpendicular to the touch display substrate.

For example, an extending direction of the first data line is consistentwith an extending direction of the touch signal line, and a distancebetween the first data line and the touch signal line is equaleverywhere.

For example, each of the data lines at the gaps which are provided withthe touch signal lines and extend in the column direction includes aconvergence line and two branch lines both connected with theconvergence line, the touch signal line is between the two branch lines,one of the two branch lines is connected with the pixel unit switch on afirst side of the touch signal line, the other of the two branch linesis connected with another pixel unit switch on a second side of thetouch signal line, and the first side and the second side are oppositesides of the touch signal line.

For example, two ends of the one of the two branch lines arerespectively connected with two ends of the other of the two branchlines to form a closed frame structure, the touch signal line is insidethe frame structure, and the convergence line is connected with theframe structure.

For example, the pixel unit switch is a low-temperature polysilicon typethin film transistor.

For example, each data line of the data lines is connected with thepixel unit switches of the sub-pixel units which are respectively on twosides of the each data line in the row direction and are respectively indifferent rows.

For example, each of the data lines is connected with the pixel unitswitches of the sub-pixel units of the same color.

For example, only the sub-pixel units of two different colors arebetween any two adjacent ones of the data lines.

For example, the sub-pixel units in two rows of the sub-pixel unitsspaced apart from each other by one row of the sub-pixel units arealigned in the column direction.

For example, the touch display substrate according to the embodiment ofthe present disclosure further includes touch detection electrodes,where the touch detection electrodes are connected with the touch signallines, respectively.

For example, the touch detection electrodes are further configured to beused as a common electrode layer of the plurality of sub-pixel units.

According to the embodiments of the present disclosure, a display deviceis further provided. The display device includes the touch displaysubstrate as described above.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to clearly illustrate the technical solution of the embodimentsof the disclosure, the drawings of the embodiments will be brieflydescribed in the following; it is obvious that the described drawingsare only related to some embodiments of the disclosure and thus are notlimitative of the disclosure.

FIG. 1 is a partial plan view of a touch display substrate provided bythe embodiments of the present disclosure;

FIG. 2(a) is a partially enlarged schematic view in FIG. 1;

FIG. 2(b) is another partially enlarged schematic view in FIG. 1;

FIG. 3 is a schematic cross-sectional view taken along line A-A in FIG.2(a);

FIG. 4 is another schematic cross-sectional view of the touch displaysubstrate provided by the embodiments of the present disclosure;

FIG. 5 is still another schematic cross-sectional view of the touchdisplay substrate according to the embodiments of the presentdisclosure;

FIG. 6 is another partial plan view of the touch display substrateprovided by the embodiments of the present disclosure;

FIG. 7 is a schematic cross-sectional view taken along line B-B in FIG.6;

FIG. 8 is a flow chart of a manufacturing method of the touch displaysubstrate according to the embodiments of the present disclosure;

FIG. 9 is another flow chart of the manufacturing method of the touchdisplay substrate provided by the embodiments of the present disclosure;

FIGS. 10 to 22 are schematic views of the manufacturing process of thetouch display substrate according to the embodiments of the presentdisclosure.

DETAILED DESCRIPTION

In order to make objects, technical details and advantages of theembodiments of the disclosure apparent, the technical solutions of theembodiments will be described in a clearly and fully understandable wayin connection with the drawings related to the embodiments of thedisclosure. Apparently, the described embodiments are just a part butnot all of the embodiments of the disclosure. Based on the describedembodiments herein, those skilled in the art can obtain otherembodiment(s), without any inventive work, which should be within thescope of the disclosure.

FIG. 1 is a partial structural schematic view of a touch displaysubstrate provided by the embodiments of the present disclosure. Asshown in FIG. 1, the touch display substrate includes a plurality ofsub-pixel units 10 arranged in an array, a plurality of data lines 20, aplurality of touch signal lines 30 (only one of which is shown in FIG. 1as an example), and a plurality of touch detection electrodes (not shownin FIG. 1).

For example, as shown in FIG. 1, the sub-pixel units 10 in each row ofsub-pixel units are aligned; for any two adjacent rows of sub-pixelunits, the sub-pixel units 10 in one row of sub-pixel units arestaggered in a row direction with respect to the sub-pixel units 10 inthe other row of sub-pixel units adjacent to the one row of sub-pixelunits 10 by a distance of X sub-pixel units 10, and 0<X<1. For example,X is 0.5. For any two adjacent rows of sub-pixel units, the sub-pixelunit in one of the two adjacent rows of sub-pixel units has a colordifferent from that of the sub-pixel unit, which is adjacent to thissub-pixel unit and is in the other row of sub-pixel units. Eachsub-pixel unit 10 includes a pixel unit switch 11 and a pixel unitelectrode 12. Each data line 20 is provided at a gap extending in acolumn direction and between the sub-pixel units 10. For example, eachdata line 20 is connected with the pixel unit switches 11 of thesub-pixel units 10 which are in different rows. For example, each dataline 20 is connected with the pixel unit switches 11 in the sub-pixelunits 10 which are respectively provided at two sides of the data line20 in the row direction and are in the different rows. Each touch signalline 30 is provided at the gap extending in the column direction andbetween the sub-pixel units 10. Because the number of the touch signallines 30 is smaller than the number of the data lines 20, not every gapextending in the column direction and being provided with the data line20 is provided with one touch signal line 30; in this case, for example,the data lines 20 include first data lines 21 and second data lines 22,the gap extending in the column direction and being provided with thefirst data line 21 is provided with the touch signal line 30, and thegap extending in the column direction and being provided with the seconddata line 22 is not provided with the touch signal line 30. The touchsignal lines 30 and the data lines 20 are in a same layer and the touchsignal lines 30 are insulated from the data lines 20.

For example, as shown in FIG. 1, the touch display substrate furtherincludes a plurality of gate lines G1, G2, . . . Gn that intersect theplurality of data lines 20 to define the plurality of sub-pixel units 10as described above. For example, each gate line is provided at a gapextending in the row direction and being between the sub-pixel units andis connected with the sub-pixel units 10 in the same row.

For example, the pixel unit switch 11 is a TFT (thin film transistor).For example, the TFT includes a gate electrode 113 and an active layer;the active layer includes a source region 112, a drain region 111 and achannel region 114 which is between the source region 112 and the drainregion 111; the source region 112 and the drain region 111 are regionselectrically connected with the data line 20 and the pixel unitelectrode 12 respectively, and are regions which are doped to allow theconductivity of the regions to be larger than that of the channel region114, for example. FIG. 2(a) is a partially enlarged schematic view ofFIG. 1 (for convenience of explanation, only components such as the datalines, the touch signal lines, the active layers, the pixel unitelectrodes and the like are shown, and other components such as touchelectrodes, insulating layers between layers and the like are notshown). As shown in FIGS. 1 and 2(a), the active layer is in a layerdifferent from the layer where the data lines 20 and the touch signallines 30 are located, the source region 112 is electrically connectedwith the data line 20 through a via hole 101, and the drain region 111is electrically connected with the pixel unit electrode 12 through a viahole 102. For example, the TFT is a top gate type TFT or a bottom gatetype TFT, and the embodiments of the present disclosure are not limitedthereto.

The pixel unit switches 11 includes first pixel unit switches 11 a andsecond pixel unit switches 11 b. The first pixel unit switch 11 a isconnected with a first side of the first data line 21 (e.g., a left sideof the first data line 21 shown in FIG. 2(a)), the second pixel unitswitch 11 b is connected with a second side of the first data line 21(e.g., a right side of the first data line 21 shown in FIG. 2(a)), andthe first side and the second side are opposite sides of the first dataline 21. A projection of the touch signal line 30 in a directionperpendicular to the touch display substrate is located between thesource region and the drain region of the first pixel unit switch 11 a,that is, an orthographic projection of the touch signal line 30 on thebase substrate 1 is located between an orthographic projection of thesource region of the first pixel unit switch 11 a on the base substrate1 and an orthographic projection of the drain region of the first pixelunit switch 11 a on the base substrate.

For example, a distance d₁ in the row direction between the sourceregion 112 and the drain region 111 of the first pixel unit switch 11 ais larger than a distance d₂ in the row direction between the sourceregion 112 and the drain region 111 of the second pixel unit switch 11b. This makes it easy to arrange the touch signal line 30.

For example, the TFT is a low-temperature polysilicon type TFT, whichhas more advantages than an amorphous silicon type TFT. FIG. 3 is aschematic cross-sectional view take along line A-A in FIG. 2(a). Incombination with FIGS. 2(a) and 3, the TFT includes the gate electrode113 provided on the base substrate 1, a gate insulating layer 2 providedon the gate electrode 113, and the active layer provided on the gateinsulating layer 2. The gate insulating layer 2 is, for example, formedof silicon oxide or silicon nitride, and has a thickness of, forexample, 80 nm to 120 nm. The active layer has the drain region 111 andthe source region 112 which are spaced apart from each other and has thechannel region 114 located between the drain region 111 and the sourceregion 112. The orthographic projection of the drain region 111 and theorthographic projection of the source region 112 on the base substrate 1is located outside an orthographic projection of the gate electrode 113on the base substrate 1, and an orthographic projection of the channelregion 114 on the base substrate 1 coincides with the orthographicprojection of the gate electrode 113 on the base substrate 1. Theelectron mobility of the low-temperature polysilicon is much larger thanthat of the amorphous silicon, so the active layer is made longer andnarrower in the low-temperature polysilicon type TFT to increase thedistance between the drain region 111 and the source region 112 of thefirst pixel unit switch 11 a, and to facilitate the arrangement of thetouch signal line 30.

As shown in FIG. 3, the plurality of touch signal lines 30 and theplurality of data lines 20 are provided in the same layer and theplurality of touch signal lines 30 are insulated from the plurality ofdata lines 20.

For example, a first insulating layer 3 is provided on the layer wherethe TFT is located, and a material of the first insulating layer 3includes nitride or nonmetallic oxide, the nitride includes but is notlimited to SiNx, and the nonmetallic oxide includes but is not limitedto SiOx. The first insulating layer 3 is provided between the layerwhere the TFT is located and the layer where the plurality of touchsignal lines 30 and the plurality of data lines 20 are located. Forexample, as shown in FIG. 3, a via hole 101 passes through the firstinsulating layer 3.

The plurality of touch detection electrodes 31 are connected withrespective corresponding touch signal lines 30. For example, the touchdetection electrode 31 is electrically connected with the correspondingtouch signal line 30 through the via hole 103. A second insulating layer4 is, for example, provided between the layer where the touch signalline 30 is located and a layer where the touch detection electrode 31 islocated to planarize the surface of the layer. For example, a materialof the second insulating layer 4 is resin. For example, as shown in FIG.3, the via hole 103 passes through the second insulating layer 4.

For example, a third insulating layer 5 is provided between the layerwhere the touch detection electrode 31 is located and a layer where thepixel unit electrode 12 is located. A material of the third insulatinglayer 5 is, for example, silicon nitride. A thickness of the thirdinsulating layer 5 is, for example, from 100 nm to 200 nm. For example,as shown in FIG. 3, a via hole 102 passes through the first insulatinglayer 3, the second insulating layer 4 and the third insulating layer 5.

With reference again to FIG. 2(a), the projection of any touch signalline 30 in the direction perpendicular to the touch display substrate islocated between the source region 112 and the drain region 111 of thefirst pixel unit switch 11 a. That is, the touch signal line 30 crossesdirectly above the first pixel unit switch 11 a to prevent the shortcircuit generating between the touch signal line 30 and the data line20.

As shown in FIG. 2(a), a first distance d₃ is greater than a seconddistance d₄, the first distance d₃ is a distance in the row directionbetween the two data lines 20 closest to the same touch signal line 30,and the second distance d₄ is a distance in the row direction betweenany two adjacent data lines 20 located between the two adjacent touchsignal lines 30. Because a region between the touch signal line 30 andthe first data line 21 does not emit light, setting the first distanced₃ larger than the second distance d₄ increases the area of the regionthat emits light under a given area of the region between the touchsignal line 30 and the first data line 21.

For example, for the two columns of sub-pixel units 10 closest to thesame first data line 21, a distance d₅ between the first data line 21and the pixel unit electrode 12 of the sub-pixel unit 10 located on thefirst side of the first data line 21 is larger than a distance d₆between the first data line 21 and the pixel unit electrode 12 of thesub-pixel unit 10 located on the second side of the first data line 21,and the first side and the second side are the opposite sides of thefirst data line 21. For example, the first pixel unit switch 11 a isprovided in the sub-pixel unit 10 located on the first side of the firstdata line 121. Because the distances between the first data line 21 andthe pixel unit electrodes 12 of the sub-pixel units 10 respectivelylocated on the two sides of the first data line 21 is not equal to eachother, it is convenient to place the touch signal line 30 on the sidewhere the distance is larger. Note that the distance between the firstdata line 21 and the pixel unit electrode 12 refers to the minimumdistance between an edge of the first data line 21 and an edge of thepixel unit electrode 12 in the row direction.

For example, the two data lines 20 closest to the same touch signal line30 include the first data line 21 and the second data line 22; and forthe two data lines 20 closest to the same touch signal line 30, adistance d₇ between the second data line 22 and the touch signal line 30in the row direction is equal to the second distance d₄, so that thelight emitting areas of the sub-pixel units are equal to each other. Thedata line closest to the touch signal line means that no touch signalline or no data line is between the data line and the touch signal line.For example, in FIG. 2(a), the two data lines 20 closest to the sametouch signal line 30 are the first data line 21 located on a right sideof the touch signal line 30 and the first second data line 22 located ona left side of the touch signal line 30, which has nothing to do withthe actual distances.

For example, as shown in FIG. 2(a), the active layer includes ahorizontal portion a extending in the row direction and a verticalportion b extending in the column direction. For example, a projectionof the horizontal portion a in the direction perpendicular to the touchdisplay substrate partially overlaps a projection of the gate line inthe direction perpendicular to the touch display substrate; that is, anorthographic projection of the horizontal portion a on the basesubstrate 1 overlaps an orthographic projection of the gate line on thebase substrate 1. In this way, a portion of the gate line is, forexample, directly used as the gate electrode. For example, as shown inFIG. 2(a), for a projection of the vertical portion b of the activelayer of the first pixel unit switch 11 a connected with the first dataline 21 in the direction perpendicular to the touch display substrate,the projection of the vertical portion b is located within theprojection of the touch signal line 30 in the direction perpendicular tothe touch display substrate, and the projection of the vertical portionb has a width in the row direction equal to a width in the row directionof the projection of the touch signal line 30 in the directionperpendicular to the touch display substrate; that is, for the firstpixel unit switch 11 a connected with the first data line 21, anorthographic projection of the vertical portion b of its active layer onthe base substrate 1 is located within the orthographic projection ofthe touch signal line 30 on the base substrate 1, and the width of theorthographic projection of the vertical portion b on the base substrate1 in the row direction is equal to the width of the orthographicprojection of the touch signal line 30 on the base substrate 1 in therow direction. FIG. 2(b) is another partially enlarged schematic view ofFIG. 1. Different from FIG. 2(a), in FIG. 2(b), for the projection ofthe vertical portion b of the active layer of the first pixel unitswitch 11 a connected with the first data line 21 in the directionperpendicular to the touch display substrate, the projection of thevertical portion b is located within the projection of the first dataline 21 in the direction perpendicular to the touch display substrate,and the projection of the vertical portion b has the width in the rowdirection equal to the width in the row direction of the projection ofthe first data line 21 in the direction perpendicular to the touchdisplay substrate; that is, for the first pixel unit switch 11 aconnected with the first data line 21, the orthographic projection ofthe vertical portion b of its active layer on the base substrate 1 islocated within the orthographic projection of the first data line 21 onthe base substrate 1, and the width of the orthographic projection ofthe vertical portion b on the base substrate 1 in the row direction isequal to the width of the orthographic projection of one first data line21 on the base substrate 1 in the row direction. In the structure shownin FIG. 2(a), the vertical portions b of the active layers of all pixelunit switches 11 are separated by the same distance, so as to facilitatepatterning. In the structure shown in FIG. 2(b), the vertical portions bof the active layers of all the pixel unit switches 11 overlap the datalines 20, so that the electrical uniformity of the touch displaysubstrate can be increased. In the embodiments of the presentdisclosure, the positional relationship between the gate line and theactive layer is not limited to the cases shown in FIGS. 2(a) and 2(b).For example, the gate line overlaps the vertical portion b of the activelayer at two positions and the gate line does not overlap the horizontalportion a of the active layer, thereby forming a double gate TFT.

For example, the plurality of touch detection electrodes 31 form acommon electrode layer of the sub-pixel units. In this case, the touchdetection electrodes 31 are also used as the common electrode layer ofthe sub-pixel units 10, which is advantageous for reducing the thicknessof the display substrate.

For example, as shown in FIG. 3, the data line 20 and the touch signalline 30 are located between the layer where the active layer 14 islocated and the common electrode layer.

FIG. 4 is another schematic partial cross-sectional view of the touchdisplay substrate provided by the embodiments of the present disclosure.The structure of the touch display substrate shown in FIG. 4 isbasically the same as that of the touch display substrate shown in FIG.3, except that the pixel unit electrode 12 of the touch displaysubstrate in FIG. 4 is located below the touch detection electrode 31.

FIG. 5 is another schematic partial cross-sectional view of the touchdisplay substrate provided by the embodiments of the present disclosure.The structure of the touch display substrate shown in FIG. 5 isbasically the same as that of the touch display substrate shown in FIG.3, except that the pixel unit switch in the touch display substrateshown in FIG. 5 is a top gate type TFT.

It should be noted that a light shielding layer facing the channelregion 114 is provided between the base substrate 1 and the active layer114 in the manufacturing process of the top gate type TFT, to prevent aphoto-generated leakage current, and the light shielding layer is notshown in FIG. 5.

By arranging the touch signal line and the data line in the same layer,the parasitic capacitance between the data line and the touch signalline is reduced, an insulating layer between the data line and the touchsignal line is omitted, and the process is simplified. Meanwhile, thetouch signal line and the data line are insulated from each other toavoid short circuit between the touch signal line and the data line.

As shown in FIG. 1, the sub-pixel units 10 in the two rows of sub-pixelunits 10 spaced apart from each other by one row of sub-pixel units arealigned in the column direction, so that the sub-pixel units 10 arearranged more orderly and are convenient to be manufactured.

It can be contemplated that in other embodiments, the sub-pixel units 10in the two rows of sub-pixel units 10 spaced apart from each other byone row of sub-pixel units may also be arranged out of alignment in thecolumn direction to meet different needs. For example, in a triangulartouch display substrate, the sub-pixel units 10 in two rows of sub-pixelunits 10 spaced apart from each other by one row of sub-pixel units areretracted into a distance of several sub-pixel units 10 row by row inthe column direction. For example, in the touch display substrate ofother possible shape which includes but is not limited to a circle, arhombus, an oval and a trapezoid, the sub-pixel units 10 in two rows ofsub-pixel units 10 spaced apart from each other by one row of sub-pixelunits are, for example, retracted or extended by a distance of severalsub-pixel units 10 in the column direction, so that the pixel units arearranged in the shape of the display substrate.

In the embodiments of the present disclosure, for example, any row ofsub-pixel units 10 includes sub-pixel units 10 of three differentcolors; the sub-pixel units 10 of the three different colors that areadjacent and arranged in sequence are used as a repeating unit; and therepeating unit is repeatedly arranged in the row direction in any row ofsub-pixel units 10. In a non-rectangular touch display substrate, in asituation where it needs to retract the distance of the severalsub-pixel units 10, the sub-pixel units 10 is retracted by the distanceof an integer multiple of 3, for example. For the display substrateincluding only sub-pixel units 10 of two different colors in the samerow, sub-pixel units 10 is retracted by the distance of an integermultiple of 2 is, for example.

For example, the color of each sub-pixel unit 10 is different from thecolor of the sub-pixel unit 10 adjacent to the each sub-pixel unit 10,so that the arrangement of the sub-pixel units 10 is facilitated in asituation where the sub-pixel units 10 of the three different colors areincluded in the same row.

For example, the sub-pixel units 10 of only two different colors areprovided between any two adjacent data lines 20.

For example, a same pixel unit includes six sub-pixel units (such as thesix sub-pixel units in the dotted line box in FIG. 1), so that it issuitable for forming a UHD (ultra high definition) display device. Thesmaller the distance between adjacent data lines 20, the more pixelunits in a unit area. By reducing the distance between the adjacent datalines 20, the PPI (pixel per inch) of the touch display substrate isincreased.

For example, each data line 20 is connected with the pixel unit switches11 of the sub-pixel units 10 of the same color, which facilitatescolumn-inversion in displaying a monochrome picture.

As shown in FIG. 1, each data line 20 is connected with only the pixelunit switches 11 of the sub-pixel units 10 which are of the same colorand are located on the two sides of the data line 20. In this way, indisplaying the monochrome picture, only the data lines 20 connected withthe sub-pixel units 10 which are corresponding to the color to bedisplayed need to be turned on, for example, only the S1 and S4 datalines 20 need to be turned on in displaying a red picture, which issimple to implement and convenient to operate.

FIG. 6 is another partial structural schematic view of the touch displaysubstrate provided by the embodiments of the present disclosure, andFIG. 7 is a cross-sectional schematic view at B-B in FIG. 6. As shown inFIGS. 6 and 7, in the touch display substrate, the first data line 21includes a convergence line 212 and two branch lines 211 both connectedwith the convergence line 212, the touch signal line 30 is locatedbetween the two branch lines 211, one of the two branch lines 211 isconnected with the pixel unit switches 11 located on the first side ofthe touch signal line 30, the other of the two branch lines 211 isconnected with the pixel unit switches 11 located on the second side ofthe touch signal line 30, and the first side and the second side are theopposite sides of the touch signal line 30. By providing the first dataline 21 with the two branch lines 211, each of the two branch lines 211is connected with only the pixel unit switches 11 on one side of thetouch signal line 30, and this prevents the touch signal line 30 fromcrossing the pixel unit switch 11.

As shown in FIG. 6, the two branch lines 211 has a same extendingdirection, two ends of one branch line 211 are respectively connectedwith two ends of the other branch line 211 to form a closed framestructure, and the touch signal line 30 is located inside the framestructure. Two convergence lines 212 are connected with the framestructure. Because the touch signal line 30 is located inside the framestructure, a via hole needs to be provided to lead out the touch signalline 30.

In the touch display substrate shown in FIG. 2, each touch signal line30 and each data line have the same extending direction, and thedistance between the touch signal line 30 and the data line 20 closestto the touch signal line 30 is equal everywhere. In this way, it isconvenient to set the data line 20 and the touch signal line 30, andmeanwhile the case of local accumulation of charge caused by the smalllocal distance between the data line 20 and the touch signal line 30 isavoided. For example, the extending direction of the first data line 21is the same as the extending direction of the touch signal line 30, andthe distance between the first data line 21 and the touch signal line 30is equal everywhere. In addition, in the touch display substrate shownin FIG. 2, because the data line 20 does not have branches, the area ofthe orthographic projection of the data line 20 on the base substrate 1is smaller, which is advantageous for increasing the aperture ratio ofthe pixel units and reducing the power consumption of the displaysubstrate under a same brightness of the display substrate. Comparedwith the touch display substrate shown in FIG. 4, the aperture ratio ofthe touch display substrate shown in FIG. 2 is increased by 20%; throughexperimental tests, in a situation where the same monochrome picture isdisplayed and the brightness is the same, the power consumption of thetouch display substrate shown in FIG. 2 is about 20% lower than that ofthe touch display substrate shown in FIG. 4.

The embodiments of the present disclosure further provides a displaydevice, which includes the touch display substrate shown in any one ofFIGS. 1 to 7. For example, the display device may be any product orcomponent with a display function such as a mobile phone, a tabletcomputer, a television, a display, a notebook computer, a digital photoframe, a navigator, etc.

By arranging the touch signal line and the data line which are in thesame layer, the parasitic capacitance between the data line and thetouch signal line is reduced, the insulating layer between the data lineand the touch signal line is omitted, and the process is simplified.Meanwhile, the touch signal line and the data line are insulated fromeach other to avoid the short circuit between the touch signal line andthe data line.

FIG. 8 is a flow chart of a manufacturing method of the touch displaysubstrate provided by the embodiments of the present disclosure. Themethod is suitable for manufacturing the touch display substrate shownin any one of FIGS. 1 to 7. As shown in FIG. 8, the manufacturing methodincludes the following steps.

S11: forming the plurality of pixel unit switches on the base substrate.

The pixel unit switches belong to different sub-pixel units,respectively. The sub-pixel units in each row of sub-pixel units arealigned; for any two adjacent rows of sub-pixel units, the sub-pixelunits in one row of sub-pixel units are staggered in a row directionwith respect to the sub-pixel units in the other row of sub-pixel unitsadjacent to the one row of sub-pixel units by a distance of X sub-pixelunits 10, and 0<X<1. For example, X is 0.5. For the any two adjacentrows of sub-pixel units, the sub-pixel unit in the one row of sub-pixelunits has a color different from that of the sub-pixel unit, which isadjacent to this sub-pixel unit and is in the other row of sub-pixelunits.

S12: forming the first insulating layer on the base substrate on whichthe plurality of pixel unit switches are formed.

S13: forming a first pattern layer on the first insulating layer.

The first pattern layer includes the data lines and the touch signallines spaced apart from each other. For example, the data line isconnected with the pixel unit switches of the sub-pixel units located indifferent rows. For example, the data line is connected with the pixelunit switches of the sub-pixel units which are located on the two sidesof the data line in the row direction and are located in the differentrows.

S14: forming the second insulating layer on the first pattern layer.

S15: forming the pixel unit electrodes on the second insulating layer.

The pixel unit electrodes are all connected with the pixel unitswitches, respectively.

By arranging the touch signal line and the data line which are in thesame layer, the parasitic capacitance between the data line and thetouch signal line is reduced, the insulating layer between the data lineand the touch signal line is omitted, and the process is simplified.Meanwhile, the touch signal line and the data line are insulated fromeach other to avoid the short circuit between the touch signal line andthe data line.

FIG. 9 is another flow chart of the manufacturing method of the touchdisplay substrate provided in the embodiments of the present disclosure.The method is also applicable to manufacturing the touch displaysubstrate shown in FIGS. 1 to 3. The manufacturing method will bedescribed in detail below with reference to FIGS. 10 to 16. As shown inFIG. 9, the manufacturing method includes the following steps.

S21: forming TFTs on the base substrate.

For example, top gate type TFTs or bottom gate type TFTs are formed onthe base substrate. As shown in FIG. 10, the bottom gate type TFT isformed on the base substrate 8000. The TFT includes a gate electrode8113 provided on the base substrate 8000, a gate insulating layer 8002provided on the gate electrode 8113, and an active layer provided on thegate insulating layer 8002. The active layer has a drain region 8111 anda source region 8112 spaced apart from each other and a channel region8114 located between the drain region 8111 and the source region 8112.Orthographic projections of both the drain region 8111 and the sourceregion 8112 on the base substrate 8000 are located outside anorthographic projection of the gate electrode 8113 on the base substrate8000.

The plurality of TFTs are arranged in an array on the base substrate8000 to meet the arrangement mode of the sub-pixel units of the touchdisplay substrate to be manufactured.

For example, the low-temperature polysilicon type TFTs are used.

S22: forming the first insulating layer on the base substrate on whichthe TFTs are formed.

For example, the material of the first insulating layer 8010 includesnitride or nonmetallic oxide, the nitride includes but is not limited toSiNx, and the nonmetallic oxide includes but is not limited to SiOx.

S23: forming first via holes in the first insulating layer.

As shown in FIG. 11, the first via hole 8011 passes through the firstinsulating layer 8010 and is located directly above the source region8112 of the TFT, so that the data line formed in the subsequent step iselectrically connected with the source region 8112 through the first viahole 8011.

For example, the first via holes 8011 are formed by patterning the firstinsulating layer 8010.

S24: forming a first pattern layer on the first insulating layer.

For example, the first pattern layer is formed by a patterning process.

For example, as shown in FIG. 12, the first pattern layer includes aplurality of data lines 8200 and a plurality of touch signal lines 8300that are spaced apart from the data lines 8200. The data line 8200 islocated directly above the first via hole 8011 so that the data line8200 is electrically connected with the source region 8112 of the TFTthrough the first via hole 8011.

For example, the data line 8200 and the touch signal line 8300 areformed of a metal material such as metal Al, or is formed of atransparent conductive material such as ITO (indium tin oxide).

In manufacturing the touch display substrate shown in FIG. 6, the firstdata line includes the convergence line and the two branch lines bothconnected with the convergence line, the touch signal line is locatedbetween the two branch lines, one of the two branch lines is connectedwith the source region of the TFT located on the first side of the touchsignal line through a first via hole, the other of the two branch linesis connected with the source region of the TFT located on the secondside of the touch signal line through another first via hole, and thefirst side and the second side are opposite sides of the touch signalline.

S25: forming the second insulating layer on the first pattern layer.

For example, the material of the second insulating layer 8020 is, but isnot limited to, resin.

S26: forming second via holes in the second insulating layer.

The manufacturing method of the second via holes and the manufacturingmethod of the first via holes are same, for example.

As shown in FIG. 13, the second via hole 8021 passes through the secondinsulating layer 8020 and is located directly above the touch signalline 8300, so that the touch detection electrode manufactured in thesubsequent steps is connected with the touch signal line 8300 throughthe second via hole 8021.

S27: forming the touch detection electrodes on the second insulatinglayer.

For example, the touch detection electrodes are formed by a patterningprocess.

As shown in FIG. 14, the touch detection electrode 8310 is electricallyconnected with the touch signal line 8300 through the second via hole8021.

For example, the touch detection electrodes 8310 are formed of atransparent conductive material, such as ITO, to increase lighttransmittance.

S28: forming the third insulating layer on the base substrate on whichthe touch detection electrodes are formed.

For example, the material of the third insulating layer 8030 is siliconnitride, and the thickness of the third insulating layer 8030 is from100 nm to 200 nm.

S29: forming third via holes.

As shown in FIG. 15, the third via hole 8031 is located directly abovethe drain region 8111 of the TFT, and the third via hole 8031 passesthrough the third insulating layer 8030, the second insulating layer8020 and the first insulating layer 8010, to facilitate thesubsequent-formed pixel unit electrode to be electrically connected withthe drain region 8111.

S30: forming the pixel unit electrodes on the third insulating layer.

For example, the pixel unit electrodes 8120 are formed by a patterningprocess.

As shown in FIG. 16, the pixel unit electrode 8120 is electricallyconnected with the drain region 8111 through the third via hole 8031.

For example, the pixel unit electrodes 8120 are formed of a transparentconductive material such as ITO to increase light transmittance.

For example, in a situation where the step S23 is performed, a via holeis formed in the first insulating layer 8010 and is directly above thedrain region 8111. In this way, in a situation where the step S24 isperformed, in forming the data line 8200 and the touch signal line 8300,a transition electrode is formed on the first insulating layer 8010, andthe transition electrode is electrically connected with the drain region8111 through the via hole located directly above the drain region 8111in the first insulating layer 8010. As shown in FIG. 17, bysimultaneously manufacturing the via hole 8031 a in the step S23 and thetransition electrode 8031 b in the step S24, the third via hole 8031 tobe processed in the S29 can pass through only the third insulating layer8030 and the second insulating layer 8020, thus reducing the depth ofthe third via hole 8031, reducing the process difficulty, ensuring thatthe pixel unit electrode 8120 can form a stable electrical connectionwith the drain region 8111, and reducing the possibility of open circuitand poor contact. At the same time, because the via hole 8031 a isformed at the same time as the first via hole 8011, the transitionelectrode 8031 b is formed at the same time as the touch signal line8300 and the data line 8200 without adding an additional process step.

FIG. 18 is another flow chart of the manufacturing method of the touchdisplay substrate provided by the embodiments of the present disclosure.The method is used for manufacturing the touch display substrate shownin FIG. 4. The manufacturing method includes S41 to S50, and steps S41to S45 are respectively the same as the aforementioned steps S21 to S25,and will not be described in detail here. Steps S46 to S50 of the methodwill be described below with reference to FIGS. 19 to 21.

S46: forming fourth via holes in the second insulating layer.

The manufacturing method of the fourth via holes 9021 is the same asthat of the second via holes 8021 described above.

As shown in FIG. 19, the fourth via hole 9021 is located directly abovethe drain region 9111 of the TFT, and the fourth via hole 9021 passesthrough the second insulating layer 9020 and the first insulating layer9010, to facilitate the subsequently-formed pixel unit electrode to beelectrically connected with the drain region 9111.

S47: forming the pixel unit electrodes on the second insulating layer.

For example, the pixel unit electrodes 9120 are formed by a patterningprocess.

As shown in FIG. 20, the pixel unit electrode 9120 is electricallyconnected with the drain region 9111 through the fourth via hole 9021.

S48: forming the third insulating layer on the base substrate on whichthe pixel unit electrodes are formed.

For example, the forming of the third insulating layer 9030 may refer tothe forming of the aforementioned third insulating layer 8030 and willnot be described in detail here.

S49: forming fifth via holes.

As shown in FIG. 21, the fifth via hole 9031 is formed directly abovethe touch signal line 9300, and the fifth via hole 9031 passes throughthe third insulating layer 9030 and the second insulating layer 9020, sothat the touch detection electrode formed in the subsequent step isconnected with the touch signal line 9300 through the fifth via hole9031.

S50: forming the touch detection electrodes on the third insulatinglayer.

For example, the touch detection electrodes 9030 are formed by apatterning process.

As shown in FIG. 22, the touch detection electrode 9030 is connectedwith the touch signal line 9300 through the fifth via hole 9031.

In manufacturing the touch display substrate shown in FIG. 4, theaforementioned method of adding the transition electrode can also beused to reduce the possibility of open circuit and poor contact, whichwill not be described in detail here.

What is described above is related to the illustrative embodiments ofthe disclosure only and not limitative to the scope of the disclosure;the scopes of the disclosure are defined by the accompanying claims.

1. A touch display substrate, comprising: a plurality of sub-pixel unitsarranged in an array, wherein for any two adjacent rows of sub-pixelunits, the sub-pixel units in one row of sub-pixel units are staggeredin a row direction with respect to the sub-pixel units in the other rowof sub-pixel units adjacent to the one row of sub-pixel units by adistance of X sub-pixel units, 0<X<1, each sub-pixel unit in the one rowof sub-pixel units has a color different from a color of the sub-pixelunit, which is adjacent to the each sub-pixel unit and is in the otherrow of sub-pixel units, and each of the plurality of sub-pixel unitscomprises a pixel unit switch; data lines at gaps which extend in acolumn direction and are between the plurality of sub-pixel units; andtouch signal lines at the gaps which extend in the column direction andare between the plurality of sub-pixel units, wherein the touch signallines and the data lines are in a same layer and the touch signal linesare insulated from the data lines.
 2. The touch display substrateaccording to claim 1, wherein the pixel unit switch comprises an activelayer, wherein the active layer comprises a source region, a drainregion and a channel region between the source region and the drainregion, the active layer is in a layer different from a layer where thedata lines and the touch signal lines are located, and the source regionis electrically connected with the data line through a via hole; thedata lines comprise a first data line, and the touch signal line is atthe gap, where the first data line is located, extending in the columndirection; the pixel unit switches of the plurality of sub-pixel unitscomprise a first pixel unit switch connected with a first side of thefirst data line; and a projection of the touch signal line in adirection perpendicular to the touch display substrate is between thesource region and the drain region of the first pixel unit switch. 3.The touch display substrate according to claim 2, wherein the pixel unitswitches comprise a second pixel unit switch connected with a secondside of the first data line, and the first side and the second side areopposite sides of the first data line; a distance between the sourceregion and the drain region of the first pixel unit switch in the rowdirection is greater than a distance between the source region and thedrain region of the second pixel unit switch in the row direction. 4.The touch display substrate according to claim 2, wherein a firstdistance is greater than a second distance, the first distance is adistance in the row direction between two of the data lines closest to asame touch signal line among the touch signal lines, and the seconddistance is a distance in the row direction between any two adjacentones of the data lines between two adjacent ones of the touch signallines.
 5. The touch display substrate according to claim 4, wherein thedata lines further comprise a second data line, wherein the touch signalline is not at the gap, where the second data line is located, extendingin the column direction; and the two of the data lines closest to thesame touch signal line comprise one first data line and one second dataline, and a distance in the row direction and between the touch signalline and the second data line in the two of the data lines closest tothe same touch signal line is equal to the second distance.
 6. The touchdisplay substrate according to claim 2, wherein each of the plurality ofsub-pixel units comprises a pixel unit electrode, and the drain regionis electrically connected with the pixel unit electrode; in two columnsof the plurality of sub-pixel units closest to the same first data line,a distance in the row direction and between the first data line and thepixel unit electrode of the sub-pixel unit on the first side of thefirst data line is greater than a distance in the row direction andbetween the first data line and the pixel unit electrode of thesub-pixel unit on a second side of the first data line, the first sideand the second side are opposite sides of the first data line, and thefirst pixel unit switch is in the sub-pixel unit on the first side ofthe first data line.
 7. The touch display substrate according to claim2, wherein the active layer comprises a horizontal portion extending inthe row direction; the touch display substrate further comprises a gateline at a gap extending in the row direction between the plurality ofsub-pixel units; and a projection of the horizontal portion in thedirection perpendicular to the touch display substrate partiallyoverlaps a projection of the gate line in the direction perpendicular tothe touch display substrate.
 8. The touch display substrate according toclaim 2, wherein the active layer comprises a vertical portion extendingin the column direction; a projection of the vertical portion of theactive layer of the first pixel unit switch in the directionperpendicular to the touch display substrate is within the projection ofthe touch signal line in the direction perpendicular to the touchdisplay substrate.
 9. The touch display substrate according to claim 2,wherein the active layer comprises a vertical portion extending in thecolumn direction; a projection of the vertical portion of the activelayer of the first pixel unit switch in the direction perpendicular tothe touch display substrate is within a projection of the first dataline in the direction perpendicular to the touch display substrate. 10.The touch display substrate according to claim 2, wherein an extendingdirection of the first data line is consistent with an extendingdirection of the touch signal line, and a distance between the firstdata line and the touch signal line is equal everywhere.
 11. The touchdisplay substrate according to claim 1, wherein each of the data linesat the gaps which are provided with the touch signal lines and extend inthe column direction comprises a convergence line and two branch linesboth connected with the convergence line, the touch signal line isbetween the two branch lines, one of the two branch lines is connectedwith the pixel unit switch on a first side of the touch signal line, theother of the two branch lines is connected with another pixel unitswitch on a second side of the touch signal line, and the first side andthe second side are opposite sides of the touch signal line.
 12. Thetouch display substrate according to claim 11, wherein two ends of theone of the two branch lines are respectively connected with two ends ofthe other of the two branch lines to form a closed frame structure, thetouch signal line is inside the frame structure, and the convergenceline is connected with the frame structure.
 13. The touch displaysubstrate according to claim 1, wherein the pixel unit switch is alow-temperature polysilicon type thin film transistor.
 14. The touchdisplay substrate according to claim 1, wherein each data line of thedata lines is connected with the pixel unit switches of the sub-pixelunits which are respectively on two sides of the each data line in therow direction and are respectively in different rows.
 15. The touchdisplay substrate according to claim 14, wherein each of the data linesis connected with the pixel unit switches of the sub-pixel units of thesame color.
 16. The touch display substrate according to claim 1,wherein only the sub-pixel units of two different colors are between anytwo adjacent ones of the data lines.
 17. The touch display substrateaccording to claim 1, wherein the sub-pixel units in two rows of thesub-pixel units spaced apart from each other by one row of the sub-pixelunits are aligned in the column direction.
 18. The touch displaysubstrate according to claim 1, further comprising touch detectionelectrodes, where the touch detection electrodes are connected with thetouch signal lines, respectively.
 19. The touch display substrateaccording to claim 18, wherein the touch detection electrodes arefurther configured to be used as a common electrode layer of theplurality of sub-pixel units.
 20. A display device, wherein the displaydevice comprises the touch display substrate according to claim 1.